Heating apparatus



M y 8, 19 5- E. H. LOCKWOOD ET AL 2,375,242

HEATING APPARATUS Filed Nov. 11, 1941' 2 Sheets-Sheet l 36 H WITNESSES: 3'5 3/ 4/ 2 3/ 56 INVENTOR Ed d H. 1. b d 3 Eclfii? E. f w fo 1' j Y a. n. yzg

'ATTORb y 8, 1945. E. H. LOCKWOOD ET AL 2,375,242

HEATING APPARATUS Filed NOV. 11, 1941 2 Sheets-Sheet 2 IN\IENTOR Edward H. Lockwoa & Lesver E Lawn.

ATTO EY Patented May 8,1945

HEATING APPABATU S Edwin H. Lockwood and Lester E. Lown, Mansfield, Ohio, assignors to Westinghouse Electric & Manufacturing Company,

East Pittsburgh,

a corporation of Pennsylvania Application November 11, 1941, Serial No. 418,624 7 12 Claims. (Cl. 126-39) This invention relates to heating apparatus and particularly to cooking ranges and it has for an object to provide an improved range of the character set forth.

It is another object of the invention to provide an improved range made of a minimum of parts which may be readily assembled into a substantially unitary structure.

It is a further object of the invention to provide an improved range which is compact and requires substantially no bracing structure, the manner in which the functional parts of the range are formed and interfit obviating the need for bracing.

These and other objects are effected by my invention as will be apparent from the following description and claims taken in connection with the accompanying drawings, forming a part of this application, in which:

Fig. i is a perspective view of a range made in accordance with the present invention;

Fig. 2 is a perspective view, taken from substantially the same angle as Fig. 1, of the outer body or wrapper sheet of the range illustrated in ig. 1;

Fig. 3 is a plan view of a-blank from which the wrapper sheet illustrated in Fig. 2 may be made;

Fig. 4 is a vertical section taken substantially on the line IVIV of Fig, 1, the range being shown in perspective as viewed from the right and rear of Fig. 1, with certain parts broken away to illustrate details of construction; and

Figs. 5 and 6 are perspective views, looking at the inner sides, of upperand lower panels, respectively, which are attached to the wrapper sheet illustrated in Fig. 2 to substantially complete the outer body of the range of Fig. 1.

Referring to the drawings, there is illustrated an electric range, generally indicated Ill, having three surface units II and a single oven 12 for the purpose of showing one adaptation of the invention. The operation of the surface units and oven heating units (not shown) is controlled by means of switches or the like (not shown) which are manipulated by means of knobs M. It is to be understood that the invention is adapted to other types and different style range bodies.

The range it is of substantially conventional appearance having side walls IS, a front wall H, and a cooking surface or platform 18 which is provided with a vertical back splasher l9. It is a feature of thepresent invention to form the side walls it, platform I8, and back splasher IQ of a single sheet of metal.

In Fig. 3 there is shown a substantially rectangular blank 2| which is adapted to be bent or folded along fold lines, indicated by dot and dash lines, to provide the outer body or wrapper sheet shown in Fig. 2. The blank is bent or folded at these fold lines to form an angle of substantially between the portions of the blank on opposite sides of each fold line.

The blank is divided into three substantially rectangular sections 22, 23, and 24 by transverse fold lines 25 and 26. The sections 22 and 26 form the side walls it of the completed range, while the central section 23 forms the platform it thereof.

Prior to folding the blank 21, the central section 23 is preferably provided with one or more openings 2'8 therein, which in the final assembly of the range receive the surface units it. The

margins of the blank surrounding these openings are preferably formed to provide downwardly offset flanges 28 for supporting these surface units.

The front edge 29 of the blank illustrated in Fig. 3 is provided with reentrant notches iii of the configuration shown, which notches are symmetrical with respect to the fold lines 25 and 26. Three lines of fold 32, 33, and 3t, extend substantially parallel to the front edge 29 of the blank, the fold line 32 passing through the inner end of the notches it. The portion of the blank lying between lines 32 and 33 provides, when the blank is bent into the form shown in Fig. 2, front wall portions 35, while the portion of the blank between the fold lines 33 and 36 provides rearwardly-extending flanges 36, and the portion between the fold line 3% and the front edge 29 provides flanges 37 which are offset rearwardly from the front wall portions 35.

The edges of the blank, at each notch 35, which extend between the fold lines 32 and 33 define an angle of substantially 90, so that when the blank is folded about the lines 25 and 26, these edges will abut as shown at 38 in Fig. 2 to provide a smooth joint. The edges 39 of the blank, which extend between the fold lines 33 and 3d, are substantially normal to the front edge 29 of the blank, so that when the flanges 36 are folded at right angles to the front wallportions 35, these edges will abut.

The edges 4| of the blank at the notches 3!, which extend between the fold line 34 and the front edge 29 of the blank, are disposed at substantially right angles to each other, so that on folding the blank in the manner shown in Fig. 2, the edges M will be in substantially abutting relation. 1

A toe space is provided at the lower end of the front of the range by cutting out the lower front corners of the blank 2|, flange portions 63 being defined by fold lines 44. The flange portions 43 are folded at substantially right angles to their respective sections 22 and 24, as shown in Fig. 4.

Flanges 45 are defined at each end of the blank by the mold lines 46 and, when folded at right angles to their respective sections 22 and 24, form portion 59.

the bottom of the range and are adapted-to rest on the floor.

The rear edge of the blank of Fig, 3 is provided with spaced reentrant cut-out portions 41 which define the back splasher l9 and two rear panels 48 of the range body. The panels 48 are bent back along fold lines 49. The margin along the free edge of the back splasher I9 is adapted to be bent back along the line flange 52. An opening 53 may be provided in the back splasherto receive an oven vent pipe (not shown). This opening may be covered by a grille 54.

The manner of folding the blank of Fig. 3 along the several fold lines will be clear from'Figs. 2 and 4. The joints formed by the abutting edges of the blank at the notches ii are preferably welded so that the resulting body will be rigid and obviate theneed for internal bracing. The small openings 55 between the flange 52 of the back splasher and the side wall it may be closed by means of gusset plates welded to the wrapper sheet so that after enameling, the outer body has the appearance shown in Fig. l.

The outer body of the range is completed by means of two front panels 55 Figs. 5 and 6, and an angle or toe plate 58. If desired, an angle iron strip 50 may be secured to the lower flanges 45, as by spot-welding, in order to maintain the lower rear portions of the side walls It in flxed relation. The panel 56, shown in Fig. 5, supports the'surface unit and oven heating element control knobs l4 and comprises a substantially rectangular trough-like portion 59 having a depending extension 61 along the lower edge thereof.

The trough-like portion series of openings through tuated by the knobs M are adapted to extend. The switches or the like actuated by these knobs 'may be mounted on the rear face of the panel 56 in any suitable manner. The depending extension ti terminates in an inwardly-extending horizontal flange 52 and, substantially midway between this flange and the portion 59, is provided with an elongated rectangular opening 53 through which a crumb tray 82 is insertable. The margin surrounding this opening 53 is bent inwardly to provide a flange 64. The panel 55 is secured to the wrapper sheet in the position shown in Fig. l, as by spot-welding its flanges 65 to the flanges 36 of the wrapper sheet. The height of the flanges 55 is substantially the same as that of the face of the panel 56 will be substantially flush with the front wall portions 35 of the wrapper sheet.

The lower panel 51, illustrated in Fig. 6, is provided with opposed end flanges 61 which are adapted to be secured, as by spot-welding, to the flanges 36 to support the panel 51 with the lower edge thereof substantially aligned with the lower end of the front wall portions 35. The upper margin of the panel 51 is bent back to provide an inclined flange 68 which terminates in a. vertical flange 69.

By reference to Fig. 4, it will be noted that the flange 69 is located in substantially the same vertical plane as the extension 51 of the panel The flange 59 and extension 6! are also in substantially the same plane as the flanges 31 of the wrapper sheet so that these members may be engaged by an outwardly-turned flange 1| of the oven liner l2.

The angle plate 58 is spot-welded to the flange 59 is provided with a 5! to provide a and 51, shown in which the shafts ac- 43 formed on the side walls of the range, as will be clear from an inspection of Fig. 4. If desired, the angle plate 58 may be formed integral with the panel 51.

After the panels and 51 and theangle plate 58 have been spot-welded or otherwise suitably securedtqthewrapper sheet (Fig. 2), the outer. surface of the range body maythen be enameled and prepared for final assembly.

As shown in Fig. 4, a horizontal sheet member 12, which extends substantially from one side wall of the range to the other, is provided with a downwardly-turned flange 13 at its forward edge which is received between the rearwardly-turned flanges 62 and 84 of the upper panel 56. The rear end of this member 12 is supported on a lower horizontal flange 14 of a channel-shaped member 15 which may be secured, as by spot weiding. to the rear vertical flanges 48 extending along the rear edge of the side walls 15.

The member 1 i secured to the mentioned lower horizontal flange 14 as by means of bolts 16, which also secure a vertical panel 11 to the under surface of this flange. The vertical panel 11 preferably extends between the side walls It and, if desired, may be attached to the rear vertical flanges 48 while its lower end supports and is secured to a second horizontal sheet member 18. As shown in Fig. 4, the upturned rear flange 18a ,of the sheet member 18 engages the flanges 48 and may b secured thereto to provide additional support for the sheet member.

The forward end of this second sheet member 18 is folded to provide a vertical flange 19 and a rearwardly-extending horizontal flange 80 which rests on theangle plate 58. The forward edge of the sheet member 18 is preferably notched to receive the vertically-extending flanges 36 and 31 of the wrapper sheet, as indicated .at 8| in Fig.4.,

.The upper horizontal sheet member 12, to-

gether with the channel-shaped member 15, de-

flanges 36, so that the outer flat fines an enclosed space in which the conductors for the surface units ii are receivable. This sheet member also supports a crumb tray 82 which is removable through the elongated opening 63 provided in the upper panel 56.

The oven liner l2, which may be of known construction, is insertable in the space between the upper and lower panels 55 and 51, and is provided with an outwardly-turned vertical flange Ii which is adapted to engage the flanges 31 of the wrapper sheet, the flange 59 of the lower panel 51, and the lower edge of the depending extension 61 of the panel 55. The rear end of the oven liner may be supported by means of an inverted U -shaped bracket 8% which rests on and is secured to the lower horizontal sheet member 18.

As is well known in the art, the oven liner may have heating elements (not shown) supported therein, the conductors therefor extending through openings 85 provided in the rear wall of the oven liner.

As particularly shown in Fig. 4, the walls of the oven liner are spaced from the upper and lower sheet members 12 and I8 and the vertically-extending panel 11, as well as from the side walls l6 of the range body. These spaces are preferably filled with suitable heat insulation material.

The front of the oven is closed by means of an insulated door 85 which may be hinged, in any suitable manner, to the range body. The

upper flange 8'! of this oven door is of sufiicient height to cover and conceal the front edged the crumb tray when the door is closed.

While we have shown our invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modification withginal portions of said wrapper sheet along thev front edge of the side walls including portions extending at an angle to the plane of said side walls and serving to reinforce the same, an oven Within said body, a pair of vertically-spaced panels secured to said marginal portions of said wrapper sheet and forming at least a part of the front wall of said range, the space .between said panels providing access to said oven, and a door for closing said space.

2. A range comprising a one-piece wrapper sheet providing integral top and side walls for said range, marginal portions of said wrapper sheet along the front edge of the side walls including portions extending at an angle to the plane of said side walls and serving to reinforce the same, spaced front panels extending between and attached to said marginal portions of said wrapper sheet, and a movable panel supported on said range between said spaced panels to complete the front of said range.

3. A range comprising a one-piece wrapper sheet forming the lateral side walls platform, and back splasherof the range, marginal portions of said wrapper sheet along the front edge of the side walls including portions extending at an angle to the plane of said side walls and plementary flanges thereon, means for securing the flanges of said panels to said flanges on said side walls, and meansj for. closing the space between said panels-to-complete thefront of said range.

7. A range comprising an outer body including continuously-extending lateral side walls and a top, at least one panel extending between and secured to the front edge of said lateral side walls to provide a front wall for said range, said lateral sidewalls each having a verticallyextending flange along the rear edge thereof, a member extending across the rear of said range and supported by said flanges, and a horizontal partition disposed within said range and supported at its rear end by said member and at its forward end by said front panel.

8. A range comprising a wrapper sheet pro,-

'Viding integral lateral side walls and a top for said range, a pair of vertically-spaced panels extending between and secured to said lateral side walls at the front thereof, the opposed edges of said panels being disposed in substantially the same plane, and an oven liner having outwardlyturned flanges at its front end, said oven liner being receivable within said range with the flanges thereof in engagement with said opposed edges of said spaced panels.

9. A range comprising a one-piece wrapper sheet forming the lateral side walls and platform of the range, means for closing the front of said'range, a horizontalpar tition within said wrapper sheet and extending substantially between the lateral side walls thereof in spaced relation to said platform, vertically-extending flanges along the rear edge of said side walls,

means carried by said flanges for supporting the rear end of saidhorizontal partition, the front end of said horizontal partition being supported by said front closing means.

10. A range comprising a wrapper sheet providing lateral side walls and a platform for said serving to reinforce the same,. a pair of spaced ing the front of said range, a horizontal sheet member supported by said wrapper sheet and dividing the interior of said range into two compartments, and an oven liner supported by said wrapper sheet within one of said compartments.

5. A range comprising a one-piece wrapper sheet forming the lateral sidewalls and platform of said range, the front edge of the sidewalls of 1 said range having vertical, rearwardly-extending flanges thereon, a pair of vertically-spaced panels having vertical, rearwardly-extending flanges thereon, said flanges on said panels being secured to said flanges on said wrapper sheet, and a movable panel for closing the between said panels.

6. A range comprising a. one-piece wrappersheet providing integral top and side walls for said range, vertically-spaced front panels exspace range, means for closing the front of said range,

the lower front corners of said side walls .having cut-out portions to provide a toe space, a

plate extending between said side walls and receivable in said cut-out portions, a horizontal partition'disposed within said range and supported at its front end on said plate, and means carried by said wrapper sheet for supporting the rear end of said partition.

11. A range comprising a one-piece wrapper sheet providing lateral side walls and a cooking platform for said range, spaced panels secured tending between the front edges of said side walls, said front edges and panels having comto the front edge of said wrapper sheet, means for closing the space between said panels to complete the front of said range, a pair of spaced horizontal partitions within said range, said'partitions being supported by saidwrapper sheet and dividing the range into a plurality of compartments, and an oven liner disposed in one of said compartments.

12. A range comprising a, one-piecewrapper sheet forming the side walls and platform of the range, marginal portions of the,- wrapper sheet along the front and rear vertical edges. of each side wall extending at an angle to the plane of the side wall and providing opposed flanges at the front and at the rear of the range, said flanges serving to reinforcev said side walls.

EDwrN nocxwoon. ,LES'I'ER n'LoWN, 

